F1554 Grade 55 Hardware Recommendations
| Grade | Identification | Size, Inches | Recommended A563 Nut | Washer | |||
|---|---|---|---|---|---|---|---|
| Plain Finish | Hot-Dip or Mechanical Zinc Coated | ||||||
| Grade | Style | Grade | Style | ||||
| 55 |  |
1/2 – 1-1/2 | A | Hex | A | Heavy Hex | F436 |
| 1-5/8 – 4 | A | Heavy Hex | A | Heavy Hex | |||
| For additional compatible nuts see the Nut Compatibility Chart. | |||||||